Military helmet



J. DUNAND.

Mummy HELMET.

- AFP-ucmm mia :uns 5. isn. Paented Feb. l 1921.

`2 sauts-skin l. Y

1. nuNANn. I MILITARY HELMET. :z

Patented Feb. 1,1921.

[72 2 suns-sain 2.

l Arrucmou mso :un: s. mi. v 1,366,907.

Jaa Juramf 'i I .M-enfer JEAN DUAND, F PARIS, FIR'AIBT'IDIJ.

T o all whom t may concern:v

Be it known that I, JEAN Doni/inn, citizen of the Re mblic of Switzerland. residing at 72 Rue liall, Paris, in the Republic of France, have invented new and useful Improvenients in Military Helmets, of which the following is a specification.

l raised position.

vline The object of the present invention is amilitary helmet which is obtnined by stamping out a single piece of sheetseel` and is also to be remarked for its general rounded form without angles or fiat places and thus presenting no Weak portions; itis designed so that projectiles will have the. least eiect upon it, the design being such as to favor the deflection of such projectiles.

This form also allows of protecting the ears, temples and nape of the neck Without preventing the proper sight oi objects or hindering the soldier in any way, even when he is engaged in firing in a reclining position. Protection of eyes and face can be obtained by the use of a. removable vizor which is analogous in principle to the one described by the inventor in his French patent application N 84564 dated'July 5,19%. The use of a metal strip placed inside the helmet and paraliel to its contour allows of obtaining a very good circulation of air about. the head, and :is this metal strip is flexible it allows of obtaining a good iit of the helmet upon the soldiers head in each case, and of using a single type oi' helmet for various standard sizes of heads.

l In the accompanying drawings which are purely of an explanatory character:

Figures 1 and 2 show respectively s side and a front elevation of the helmetprovided with its vizor, which is supposed to be here in the lowered position.

Fig. 3 is a detail view which shows the arrangement of the slots 6 in the vizor.

Fig. 4 shows the device used for attach- F ig. 5 shows a cross section of this device, according to'line A-A of Fig. 4.

Fig. 6- is a cross-section according to the B--B of Fig. 2.

'F ig. 7 shows a. side elevation of the hel met, with the vizor supposed to be in the v Fig. 8 showsthesam e helmet; without the vizor. f

MILITARY HELMET. i i

Specification ot Letters Patent. Application tiled June 5,

Iatented Feb. 1, 1921. 1917. ser-xa1no.17s,e7. l

orties." xI-v Fig. 9 shows one of the two rosettes used Y upon the helmet, on a larger scale.

lug. l0 1s n view of the helmet from belo'w.

Pig. 11 is a partial cross-section of the helmetaccording to the line C-C or' Fi". l0, showing-'the inside nieta] strip lWhirfh lits upon the head.

Fig. l2 is a partial view of this front elevation.

As indicated in the drawing, the helmet is obtained by stamping from a single piece strip in of sheet steel, and it has a general rou11 fled form. 'The suppression of all joined pieces does away with any Weak laces in the hclniet such as are found in some of the existing types. The rims i and 2 terminate the main body or cup of the helmet which has no angles nor fiat surfaces such as would favor the action of projectiles. Thewhole 1s designed so as to facilitate the deviation of projectiles. On the top part is the crest L which is made in one piece with the cap and has a minimum height which will be suiiicientto produce the required stiness in the rounded cap. The helmet protects the cars, temples end napo of the neck. The

back rim 2 has its edge slightly curved teward the' outside so as not to incommode the soldier when ring in the recliningr po-A sition. As the rim l down as the rizn 2, it does not interfere with the field of vision. l l

Protection of the ewes can be afforded by does not reach as low 5 a removable vizor (ligs. l to 7) which is j formed oit a curved steel plate 5 provided with a series of small slots 6 of l mm. Width,

and spaced about 4 mln. apart between cen- 1- ters or longitudinal axes, and this arrangement does not prevent the proper sight o objects. The vizor is curved around the front rim of the helmet and at its two ends it carries a circular hole provided with brought into position 'so that the circular 'hole comes over the button 8 on each side and the slot 7 comes likewise over the heel of the button. By pressing on each side of 1.

- a. slot 7. On each side of the helmet is fixed .l a button 8 provided with a. heel. and in or-Av der to fix the vizor upon the helmet, it is los y is rotated slightly in `order to move the 1 slots 7 away from their respective heels. In this Way, the vizor is well fixed upon the. helmet.

When the vizor is lowered,'its edge 10 rests upon the front edge 11 of the helmet, and a rivet 12 holds it in this position. -By pulling slightly upon the vizor, it can be brought. into the raised position indicated in Fig. 7, in which position it is slightly forced. over and maintained by a small round boss 2i formed in the helmet.

In Fig. 5, itwill be seen that a removable rosette or circular badge 13 can be mounted n.011 the shaft 9 of the button 8 on each si e, the rosette having a circular hole in the center provided with tvro slots 14. Upon the button shaft 9 is a bushing 16 carrying two projections l5 and the rosette is placed so as to bring its slots over these projections, then the rosette can bc attached by pressing it down and turning it at a certain angle so as to tix it to the helmet as seen in E ig. 9.

Inside the helmet is mounted a iexible metal strip 17 (Figs. 10, 11 and 12) which also aids in the Jrotection of the head. rl'his strip is curve outward atV four points as seen at 18, in order to Enable it to be soldered or Welded to the helmet. Butall the other portions oft-he strip are spaced at a distance of 5 or 6 mm. from the helmet, and this disposition allows a suiiicient space for a goed air circulation. .'-Lt 18 are soldered or Welded the fiexible strips 19 which ser ve to hold the lining on the helmet. The

use of the flexible strip 17 allows of obtaining a. good fitof the helmet upon the Asoldiers head in each case, and of using a single type of helmet for various standard sizes of heads. The neck strap is attac-hed to the buckles or other pieces 20. f A light helmet can be obtained by employing the present invention, and by tbe use of 0.? mm. sheet steel, the helmet weighs onlyxOO grams. With 1 mm. sheet. steel it wei hs 950 grams. By employing a 2 mm. s eet steel, a helmet can be obtained for use in trenches which will weigh 1,900 kilogr. The present helmet and its vizor do not hinder in any way the use of'a mask against asphyxiating gases. The present devices are given for the sole purpose of illustrating the invention and they can be modified in constructive details Without departing from the principle of the invention.

having new described my invention, what' I claim as new and desire to secure by Letters Patent is: 1. A military helmet comprising a body of a rounded form. lstamped out of a. single steel sheet and having lateral parts adapted to protect the temples and the earso the user, a rear part adapted to substantially follow the contour of, and protect, the nape adapted to protect the eyes, the said parts and projecting rim being all. connected to the body proper by curved portions.

2. A military helmet comprising a body of a rounded form, stamped out of a single steel sheet and having lateral parts adapted to protect the temp es and the ears of the user, a rear part adapted to substantiall follow the contour of and rotect,

y a P the nape of the neck and a front projecting rim adapted to protect the eyes, the said parts and projecting rim being all connected to the body proper by curved portions, a flexible metal strip mounted at the inside of the helmet parallel to its contour and means for fixing the said metal strip to the helmet at a certain distance from the inner surface of the same.

3. A military helmet comprising a body of a rounded form, stamped outo a single steel sheet and having lateral parts adapted to protect the temples and the ears of the user, a rear part adapted to substantially follow the contour of, and protect, the napo of the neck and a front projecting rim adapted to protect the eyes, the said parts and projecting rim being all connected to l the body proper by curved iortions; a vizor provided with e. number o narrowr )arallel slots and means adapted to pivotal removably v secure the said vizor to the helmet.

.4. A military helmet comprising a body of a rounded form, stamped out o a single steel sheet and having lateral parts adapted to protect the temples andthe ears of the ly and i user, a rear part adapted to substantially .Y

follow the contour of, and protect, the nape of the neel: and afront projecting rim adapted to protect the eyes, the said parts and projecting rim beinhall connected to the body proper by curve portions, a vizor les'4 provided with a number of nai-ronr parallel slots, means adapted to pivotally and removably secure the said vizor to the helmet and means on the helmet, adapted to retain the vizor in its lowered and raised y 5' positions, respectively.

5. A. military helmet comprising` a of a rounded form, stamped out of a. single steel sheet and having lateral parts adapted to protect the temples and the ears of the user, a rear part adapted to substantially follow the contour of, and protect, the napeV of the neck and a front projecting rim adapted to protect the eyes, the said parts and projecting rim being all connected to the body proper by curved portions, a vizor ',f-f. provided with a number of narrow` parf the sides of the helmet and means adapted Aj to pivotally and removably secure the said allel slots, removable badges arranged at vizor to the helmet and to removably secure u the badges to the helmet at the same time. I a5 of the neck and .a front propctmg rmi 6. A military helmet comprising a. body adapted to protect the head of the user, a

bullet proof vizor lprovided with afnumber of narrow parallel slots and means adapted to removably secure, the said vizor to the 5 helmet.

7. A military helmet comprising a body adapted to protect the head of the user, a bullet proof vzor p1 ovded with a number of narrow parallel slots and means on the,

helmet adapted to retain the vizor in its lewv10 ered and raised positions.

In testimony whereof I have sgnedfmy name to tlns specxlcatlon 1n the presence of two subscnbmg wltnesses.

JEAN DUNAND.

Witnesses:

Loms MosEs, CRAs. PREssLY. 

